linux-kernel - Re: Abysmal PATA IDE performance

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Message-Id: <1163062700.3138.467.camel@laptopd505.fenrus.org>
Date:	Thu, 09 Nov 2006 09:58:20 +0100
From:	Arjan van de Ven <arjan@...radead.org>
To:	"J.A." Magallón <jamagallon@....com>
Cc:	Stephen.Clark@...lark.us,
	Björn Steinbrink <B.Steinbrink@....de>,
	Mark Lord <lkml@....ca>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: Abysmal PATA IDE performance

> Probably your drives are renamed.
> Before you had (wild guess, look at your boot log messages):
> - ata bus -> hdc,hdd
> - sata -> sda (if you really have any sata bus...)
> 
> Now all hdX become sdX, and PATA is detected _before_ SATA, so you names
> probaly became:
> - ata via libata -> sda (HD), sr0 (CDROM)
> - sata -> sdb.

on fedora this doesn't matter (due to mount-by-label)

the bigger problem I suspect is that the sata modules aren't part of the
initrd!

you can force the issue by adding

alias scsi_hostadapter1 ata_piix

to the /etc/modprobe.conf file, and then recreating the initrd
(see the mkinitrd tool, or just install the kernel rpm)



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